Which feature is best to drop excessive broadcast traffic on an ingress port or ArubaOS-CX switch?

Which feature is best to drop excessive broadcast traffic on an ingress port or ArubaOS-CX switch?

• A. DWRR queuing
• B. Strict queuing
• C. Rate limiting
• D. QoS shaping

Answer: (C)

Controlling ingress traffic to prevent broadcast storms is accomplished with rate limiting. By setting a maximum acceptable rate on the port and dropping any frames that exceed that limit, you cap the amount of broadcast traffic the switch accepts from connected devices. This directly reduces inbound flood, protects switch resources, and helps maintain normal operation. Other options focus on how traffic is scheduled or paced once inside the allowed rate, rather than limiting the total inbound volume. Deficit Weighted Round Robin is a queueing method for fairness across traffic classes and doesn’t inherently reduce the overall incoming rate. Strict queuing prioritizes certain traffic but can starve others and still doesn’t cap inbound volume. QoS shaping paces traffic to fit a rate, usually for outbound traffic, and is less effective for reducing inbound broadcast on an ingress port.

Controlling ingress traffic to prevent broadcast storms is accomplished with rate limiting. By setting a maximum acceptable rate on the port and dropping any frames that exceed that limit, you cap the amount of broadcast traffic the switch accepts from connected devices. This directly reduces inbound flood, protects switch resources, and helps maintain normal operation.

Other options focus on how traffic is scheduled or paced once inside the allowed rate, rather than limiting the total inbound volume. Deficit Weighted Round Robin is a queueing method for fairness across traffic classes and doesn’t inherently reduce the overall incoming rate. Strict queuing prioritizes certain traffic but can starve others and still doesn’t cap inbound volume. QoS shaping paces traffic to fit a rate, usually for outbound traffic, and is less effective for reducing inbound broadcast on an ingress port.